[PATCH v3 3/3] ima: Add digest and digest_len params to the functions to measure a buffer

[Mimi Zohar]

Hi Roberto,

On Mon, 2021-07-05 at 11:09 +0200, Roberto Sassu wrote:
> This patch adds the 'digest' and 'digest_len' parameters to
> ima_measure_critical_data() and process_buffer_measurement(), so that
> callers can get the digest of the passed buffer.
> 
> These functions calculate the digest even if there is no suitable rule in
> the IMA policy and, in this case, they simply return 1 before generating a
> new measurement entry.

I agree ima_measure_critical_data() is special.  Both this patch
description and 1/3 describe "what", not "why".  Please provide the
motivation for these changes at least in the cover letter, if not in
the patch description.

thanks,

Mimi